How to buy alesbian book without my parents knowing?!?

[FelisityDammit]

Probaly a very stupid question.... But i am curious how you go from talking to sex ? I cannot tell my parents because i am not out yet, and i still do not think they would let me purchase "the joy of lesbian sex" book, i really believe i am ready and would like to figure this out maturely and discretly on my own, i would really appreciate it if there were no answers like: "if u cant buy a book on your own yet, then you are not mature enough for sex" i know what i want , but other than that any answers are fine!!! Thankyou